113011221121 has 2 divisors, whose sum is σ = 113011221122. Its totient is φ = 113011221120.

The previous prime is 113011221097. The next prime is 113011221151. The reversal of 113011221121 is 121122110311.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 78167772225 + 34843448896 = 279585^2 + 186664^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-113011221121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 113011221095 and 113011221104.

It is not a weakly prime, because it can be changed into another prime (113011221151) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56505610560 + 56505610561.

It is an arithmetic number, because the mean of its divisors is an integer number (56505610561).

Almost surely, 2^113011221121 is an apocalyptic number.

It is an amenable number.

113011221121 is a deficient number, since it is larger than the sum of its proper divisors (1).

113011221121 is an equidigital number, since it uses as much as digits as its factorization.

113011221121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 113011221121 its reverse (121122110311), we get a palindrome (234133331432).

The spelling of 113011221121 in words is "one hundred thirteen billion, eleven million, two hundred twenty-one thousand, one hundred twenty-one".